Storm Slabs
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible
- Taille
- 1–2
Forecast new snow and wind may form storm slabs at upper elevations.
Bulletin d’avalanche
Voir sur la carteKootenay Boundary
Apr 23 – 24, 2016Avalanche Canada
Archivé · expiré 10 years ago
Danger d’avalanche
Mon
Tue
Alpin
Sans niveau
Limite forestière
Sans niveau
Sous la limite
Sans niveau
Points saillants
Spring conditions. Watch for rain weakening the snowpack.
Problèmes avalancheux
Loose Wet
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible
- Taille
- 1–3
Loose wet avalanches may be triggered by rain or sun.
Wet Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Unlikely
- Taille
- 3–6
Wet slabs are becoming less likely, but could still occur during rainfall. Glide slabs may also occur where the whole snowpack is sliding on a smooth ground surface, like rock slabs.
Weather Forecast
A cold front arriving overnight and lingering on Sunday brings 10-15 mm precipitation, with moderate to strong SW winds. The freezing level should fall to around 1800 m by Sunday afternoon. A mix of sun and cloud, light winds and mild temperatures are expected on Monday and Tuesday.
Avalanche Summary
Most operators have shut down for the season. Please continue to share your backcountry observations through the Mountain Information Network.
Snowpack Summary
As temperatures gradually cool through the weekend, loose wet and wet slab avalanches will become less likely. Storm slabs may develop in the alpine as the cold front passes through. At lower elevations, monitor the overnight freeze of the snow surface. If the snow surface does not freeze overnight or if the crust is thin or breakable, daytime heating or rain will weaken the snowpack much more quickly than if there is a well frozen thick crust. Low elevation and thin snowpack areas are isothermal.